Perform the indicated operation.(2.1x3 - 6.0x2 - 1) - (8.3x3 - 4.5x2 + 5)
A. 10.4x3 - 1.5x2 - 6
B. -6.2x3 - 1.5x2 - 6
C. -6.2x3 - 1.5x2 + 6
D. -6.2x3 - 10.5x2 - 6
Answer: B
Mathematics
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Write the complex number in trigonometric form, using degree measure for the argument.5.37 - 8.13i
A. 9.7(cos 213.4° + i sin 213.4°) B. 9.7(cos 303.4° + i sin 303.4°) C. 9.7(cos -56.6° + i sin -56.6°) D. 9.7(cos 56.6° + i sin 56.6°)
Mathematics
Subtract. 9 - (-9)
A. 18 B. 0 C. -18 D. 9
Mathematics
Divide.90 ÷ 3
A. 30 B. 32 C. 28 D. 33
Mathematics
Compute the compound interest.How long will it take for $7700 to grow to $27,200 at an interest rate of 10.9% if the interest is compounded continuously? Round the number of years to the nearest hundredth.
A. 10.9 yr B. 1157.8 yr C. 1.16 yr D. 11.58 yr
Mathematics